THE last three months of 2015 are expected to be wetter than average for southern WA, south west Queensland and most of the NT and SA.
That's according to the Bureau of Meteorology's climate outlook for October to December released today.
It reports eastern Victoria, south east NSW and the northern Cape York Peninsula in Queensland, are likely to be drier than average for the three-month period.
Elsewhere, the chances of a wetter or drier three months are roughly equal.
For October, places which are likely to have a drier than average month include the tropical north, parts of the Pilbara in WA, southern Victoria and northern Tasmania.
The current outlook reflects a combination of very warm sea surface temperatures in the Indian Ocean, and a mature El Niño in the Pacific.
Daytime temperatures for October to December are likely to be warmer than average along the southern coastline, extending from Geraldton in WA, across to the Eyre Peninsula in SA.
Much of the east coast south of Mackay is also likely to be warmer than average.
Daytime temperatures are likely to be cooler than average in an area spanning northern WA and the central NT.
Overnight temperatures are likely to be warmer than normal across most of the country except in the southeast and parts of the tropical north, where the chances are roughly equal.
Across the southwest of Australia, extending into SA, there is a strong likelihood of above normal night-time temperatures.